Present

Eastern Armenian has three present participles, while Western Armenian has one. The two exclusively Eastern present participles are in -ում (-um) (for all verb classes) and -լիս (-lis); both affixes attach to the present stem. Eastern and Western Armenian have a common present participle -ող (-oġ), which attaches to the past stem; it is sometimes used as an agentive noun: ուսանող (usanoġ student) [fr. ուսանել usanel to study)].

Past

All affixes here attach to the past stem. Both dialects have a common past passive participle in -ած (WA -aj/EA -ac). Where the dialects differ is the past active participle. The Western Armenian participle is -եր (-er) for all conjugations, while Eastern Armenian has -ել (-el).

Present

Formation of the present tense differs between Eastern and Western. In form, the present indicative of Eastern Armenian has no corresponding Western formation. However, the Western present indicative is formed identically to the Eastern present conditional.

Eastern Armenian uses the -ում (-um) participle with the present tense of Eastern Armenian verb լինել (linel "to be"). Western Armenian uses a synthetic general form of the verb preceded by the particle կը gë /gə/. The synthetic form conjugates according to the verb's theme vowel (i.e., e, i, or a).

• In Armenian, final /j/ in polysyllabic words is silent.

Imperfect

The formation of the imperfect is similar to the present-tense formation in both dialects. Eastern Armenian uses the -ում (-um) participle with the imperfect of verb լինել (linel "to be"). Western Armenian uses a synthetic imperfect form of the verb preceded by the particle կը gë /gə/.

Note that in all forms, Eastern and Western, that feature the combination էի (e.g., սիրում էիմ/կը սիրէիմ, etc.), there is an epenthetic yod: sirum ēi [siˈɹum eji] or [siˈɾum eji]; gë sirēi [ɡə siɾeˈji].

Future

Like the formation of the present tense, the future tense in Armenian intersects two varying constructions with opposite meanings. The Eastern future tense is made with the future participle in -լու (-lu) with the present tense of verb լինել (linel). (This Eastern form is identical to the Western Armenian non-past necessitative (see below.)) The Western future tense is made with the general synthetic verb preceded by the particle պիտի (bidi). (This Western form is identical to the Eastern Armenian non-past necessitative (see below.))

Note that in all Eastern forms that feature the combination ու + ե (e.g., կարդալու եմ, etc.), epenthetic yod appears: kardalu em [kaɹdaˈlujem] or [kaɾdaˈlujem].

Preterite

In various grammars, this is called the preterite, the perfect, or sometimes the aorist. Both Eastern and Western Armenian use a synthetic preterite, which is formed by deleting the infinitive marker and theme vowel, then:
· Class I and II verbs (in both dialects) add -եց (-ec῾);
· Class III verbs add -աց (-ac῾).

The preterite affixes are similar to the imperfect endings of the verb "to be" (Eastern լինել linel, Western ըլլալ ëllal)

In Class III verbs (a-thematic verbs), the preterite stem and the past stem are identical.

Non-past

The non-past optative is the simple "present" conjugated form, as compared to other Indo-European languages:

¹Historically, verbs of the third conjugation ended in final յ, which in traditional orthography is silent in word final position. Due to spelling reforms conducted in the earliest 20th century, final յ is missing from the Eastern conjugation

Past

The past optative is the simple "imperfect" conjugated form, as compared to other Indo-European languages:

¹ In both dialects, the combinations եի and էի are pronounced as though spelt "եյի" and "էյի", meaning that սիրեի and սիրէի are both pronounced [siɹeji]. The latent yod յ is written and pronounced in class III verbs.

Present and past perfect

Note: In Western Armenian, the present perfect and past perfect have two forms. One is formed by the past active participle and the verb to be (սիրեր եմ), while the other uses the more prevalent past (passive) participle (սիրած եմ). The first may denote the mediative (evidential or non evidential), the inferential, or the reportative. The second is more akin to the Eastern Perfect and the resultative.

The present perfect is formed with the l-past participle plus the present form of լինել (linel "to be"). The past perfect (pluperfect) is the l-past participle plus the imperfect of linel.

Future perfect (future in the past)

The Eastern future perfect (future in the past) indicative is formed like the future indicative tense (using the lu-participle), substituting the present forms of the verb լինել linel with the imperfect.

In Western Armenian, it is identical to the imperfect, substituting կը with պիտի.

This tense is used with events which were most likely to happen, which were to happen, according to the speaker's firm conviction, but they either haven't happened, or it's not known.

A table of the perfect forms thus: